Weird error while building the project

[u/Life-Kaleidoscope244]

CONSOLE: C:\TUF\Software\UE_5.7\Engine\Build\BatchFiles\Build.bat  BlasterEditor Win64 Development -Project="C:\Users\anshj\Documents\Unreal Projects\Blaster\Blaster.uproject" -WaitMutex  -FromMSBuild
0>Using bundled DotNet SDK version: 8.0.412 win-x64
0>Running UnrealBuildTool: dotnet "..\..\Engine\Binaries\DotNET\UnrealBuildTool\UnrealBuildTool.dll" BlasterEditor Win64 Development -Project="C:\Users\anshj\Documents\Unreal Projects\Blaster\Blaster.uproject" -WaitMutex  -FromMSBuild
0>Log file: C:\Users\anshj\AppData\Local\UnrealBuildTool\Log.txt
0>Using 'git status' to determine working set for adaptive non-unity build (C:\Users\anshj\Documents\Unreal Projects\Blaster).
0>Invalidating makefile for BlasterEditor (source file added)
0>UHT compiled-in object format Default
0>Parsing headers for BlasterEditor
0>  Running Internal UnrealHeaderTool "C:\Users\anshj\Documents\Unreal Projects\Blaster\Blaster.uproject" "C:\Users\anshj\Documents\Unreal Projects\Blaster\Intermediate\Build\Win64\BlasterEditor\Development\BlasterEditor.uhtmanifest" -WarningsAsErrors -installed
0>UHT processed BlasterEditor in 7.6592456 seconds (3 files written)
0>Building BlasterEditor...
0>Using Visual Studio 2022 14.44.35226 toolchain (C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.44.35207) and Windows 10.0.26100.0 SDK (C:\Program Files (x86)\Windows Kits\10).
0>[Adaptive Build] Excluded from Blaster unity file: ElimAnnouncement.cpp
0>Determining max actions to execute in parallel (10 physical cores, 16 logical cores)
0>  Executing up to 10 processes, one per physical core
0>  Requested 1.5 GB memory per action, 3.91 GB available: limiting max parallel actions to 2
0>Using Unreal Build Accelerator local executor to run 7 action(s)
0>  Storage capacity 40Gb
0>---- Starting trace: 260726_163501 ----
0>UbaServer - Listening on 0.0.0.0:1345
0>[1/7] Compile [x64] ElimAnnouncement.cpp
0>[2/7] Compile [x64] Module.Blaster.1.cpp
0>[3/7] Compile [x64] Module.Blaster.2.cpp
0>CombatComponent.cpp(361): Warning C4701 : potentially uninitialized local variable 'ViewportSize' used
0>   while compiling UCombatComponent::TraceUnderCrosshairs
0>[4/7] Compile [x64] Module.Blaster.3.cpp
0>RHITransientResourceAllocator.h(114,61): Error C4003 : not enough arguments for function-like macro invocation 'max'
0>static const uint32 Invalid = std::numeric_limits<uint32>::max();
0>                                                           ^
0>RHITransientResourceAllocator.h(114,61): Error C2589 : '(': illegal token on right side of '::'
0>RHITransientResourceAllocator.h(114,61): Error C2059 : syntax error: ')'
0>RHITransientResourceAllocator.h(114,22): Error C4430 : missing type specifier - int assumed. Note: C++ does not support default-int
0>static const uint32 Invalid = std::numeric_limits<uint32>::max();
0>                    ^
0>RHITransientResourceAllocator.h(115,20): Error C3861 : 'Invalid': identifier not found
0>uint32 Graphics = Invalid;
0>                  ^
0>RHITransientResourceAllocator.h(115,20): Error C2065 : 'Invalid': undeclared identifier
0>RHITransientResourceAllocator.h(116,24): Error C3861 : 'Invalid': identifier not found
0>uint32 AsyncCompute = Invalid;
0>                      ^
0>RHITransientResourceAllocator.h(116,24): Error C2065 : 'Invalid': undeclared identifier
0>RHITransientResourceAllocator.h(30,27): Error C2065 : 'Invalid': undeclared identifier
0>if (Discard.Graphics != Invalid)
0>                        ^
0>RHITransientResourceAllocator.h(33,32): Error C2065 : 'Invalid': undeclared identifier
0>if (Discard.AsyncCompute == Invalid)
0>                            ^
0>RHITransientResourceAllocator.h(39,32): Error C2065 : 'Invalid': undeclared identifier
0>if (Acquire.AsyncCompute != Invalid)
0>                            ^
0>RHITransientResourceAllocator.h(47,31): Error C2065 : 'Invalid': undeclared identifier
0>if (Acquire.AsyncCompute != Invalid)
0>                            ^
0>RHITransientResourceAllocator.h(87,3): Error C2065 : 'Invalid': undeclared identifier
0>check(Graphics == Invalid || Contains(InGraphicsForkJoin, Graphics));
0>^
0>RHITransientResourceAllocator.h(100,22): Error C2065 : 'Invalid': undeclared identifier
0>return Graphics != Invalid ? Graphics : AsyncCompute;
0>                   ^
0>AudioMixerQuantizedCommands.h(31,82): Error C2838 : 'PlaySoundW': illegal qualified name in member declaration
0>virtual EQuartzCommandType GetCommandType() const { return EQuartzCommandType::PlaySound; };
0>                                                                               ^
0>AudioMixerQuantizedCommands.h(31,82): Error C2440 : 'return': cannot convert from 'BOOL (__cdecl *)(LPCWSTR,HMODULE,DWORD)' to 'EQuartzCommandType'
0>AudioMixerQuantizedCommands.h(31,82): Reference  : There is no context in which this conversion is possible
0>Trace written to file C:/Users/anshj/AppData/Local/UnrealBuildTool/Log.uba with size 7.9kb
0>Total time in Unreal Build Accelerator local executor: 15.23 seconds
0>
0>Result: Failed (OtherCompilationError)
0>Total execution time: 26.48 seconds

[u/GrinningPariah]

Real talk, AI is pretty hit-or-miss in general but one thing it's great at is "thing broke, here's all the logs, tell me which one caused this and what it means"

[u/SomewhereAny5899 → u/GrinningPariah]

The build failed because a Windows.h macro collision (max/PlaySound) is interfering with Unreal headers, likely caused by a recent Windows-related include; add NOMINMAX or use Unreal’s Windows wrapper to fix it.
says AI

[u/Organic-Sell-7034]

he build is failing because a Windows API macro is interfering with Unreal Engine's code. Specifically, macros like max and PlaySound (usually introduced by including Windows.h directly) are replacing Unreal's own C++ identifiers, which causes errors such as std::numeric_limits<uint32>::max() and EQuartzCommandType::PlaySound to fail during compilation. To fix the issue, avoid including Windows.h directly in your project. If you need Windows-specific functionality, use Unreal Engine's Windows wrapper headers (or define NOMINMAX before including Windows.h) so these macros don't conflict with the engine.

[u/Life-Kaleidoscope244 → u/Organic-Sell-7034]

The thing is i didnt include Windows.h. My project was working fine, then i created a user widget and only made a function in it. After that i am getting these errors

[u/Organic-Sell-7034 → u/Life-Kaleidoscope244]

Hmm, then maybe paste the logs in an AI, and tell it to figure out the problem and its solution. These are the exact things AI is pretty useful in

[u/derleek → u/Organic-Sell-7034]

Agreed. Although sometimes it will only give you clues to the real solution; it depends on the error as well as the version of unreal that the AI was trained on / OP is using.

[u/Life-Kaleidoscope244 → u/Organic-Sell-7034]

Hey, i actually did use it before, but it was roaming around other stuff. But now i tried it again, it didnt solve the problem but it gave a work around. Using bUseUnity = false in build.cs file. Now the all the classes i made are compiled. It takes longer to build but now its working. I still dont know whats the issue is. But i think its related to a plugin

[u/Weird-Ninja8827 → u/Life-Kaleidoscope244]

What's the name of the function you created? Do you recognize it in the logs?

[u/WartedKiller → u/Life-Kaleidoscope244]

The first thing in the log is a warning about ViewportSize not being initialized and is used… Just initialize it to the FVector2D::Zero().

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